Case series of cleidocranial dysplasia: Radiographic follow-up study of delayed eruption of impacted permanent teeth

Yeom, Han-Gyeol; Park, Won-Jong; Choi, Eun Joo; Kang, Kyung‐Hwa; Lee, Byung‐Do

doi:10.5624/isd.2019.49.4.307

Cited by 6 publications

(12 citation statements)

References 15 publications

(19 reference statements)

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“…This study elucidated that the morphology of the zygomatic arch in panoramic radiographs was significantly abnormal in CCD patients. This is in agreement with previous case reports and literature reviews demonstrating that the zygomatic arch may be thin or even discontinuous and has a characteristic downward bend [ 11 , 29 – 31 ]. In our study, the Frankfurt line, which has been revealed to have a relatively constant position with the zygomatic arch, was used as the reference line to identify the degree of the zygomatic arch bending downward [ 32 ].…”

Section: Discussionsupporting

confidence: 93%

Detection and diagnosis of cleidocranial dysplasia by panoramic radiography: a retrospective study

Shi

Liu

et al. 2022

BMC Oral Health

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Background Cleidocranial dysplasia (CCD) is a rare and underdiagnosed congenital disorder in dentistry. The purpose of this study was to illustrate and quantify the maxillofacial bone abnormalities detected on panoramic radiographs from a relatively large retrospective case series and to provide a series of diagnostic references for dentists to indicate the presence of disease and help in making an early and accurate diagnosis. Methods The dental panoramic radiographs of thirty CCD patients aged 11 to 45 years (18 males and 12 females) were examined retrospectively. The dentition states, including supernumerary teeth and impacted teeth, were recorded. Twelve quantified measurements were adopted to determine the abnormalities of maxillofacial bones, including the degree of the zygomatic arch downward bend, bicondylar breadth, ramal height, mandibular height, mandibular aspect ratio, mandibular body height, condylar height, coronoid height, distance between the coronoid process and the condyle, bigonial width, gonial angle and best-fit gonial circle diameter. The Wilcoxon rank-sum test was used to compare the findings of the CCD patients with those of their matched controls (n = 300). Results Supernumerary teeth were detected in 27 patients (90.0%), and all 30 patients presented impacted teeth. Compared to the matched controls, the CCD patients had a significantly larger degree of zygomatic arch downward bend (ZAD), a larger diameter of the best-fit gonial circle (BGC), and a shorter distance between the coronoid process and the condyle (DCC) in panoramic radiographs (P < 0.001). According to the reference cutoff values established from the 5th or 95th percentile of the measurements in the control group, ZAD higher than 6.90 mm, DDC less than 22.37 mm and BGC higher than 52.41 mm were significantly associated with the CCD features identified. Other panoramic measurements were not significantly different between the two groups. Conclusions Panoramic radiographs had great value in the diagnosis of CCD. In this study, we identified some dental and maxillofacial features on panoramic radiographs from a relatively large retrospective case series of CCD. A series of reliable quantitative indicators were provided for dentists that can indicate the presence of disease and improve the diagnostic specificity.

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Section: Discussionsupporting

confidence: 93%

Detection and diagnosis of cleidocranial dysplasia by panoramic radiography: a retrospective study

Shi

Liu

et al. 2022

BMC Oral Health

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“…This study elucidated that the morphology of the zygomatic arch in panoramic radiographs was signi cantly abnormal in CCD patients. This is in agreement with previous case reports and literature reviews demonstrating that the zygomatic arch may be thin or even discontinuous and has a characteristic downward bend [15][16][17][18]. In our study, the Frankfurt line, which has been revealed to have a relatively constant position with the zygomatic arch, was used as the reference line to identify the degree of the zygomatic arch bending downward [19].…”

Section: Discussionsupporting

confidence: 91%

Detection and diagnosis of cleidocranial dysplasia by panoramic radiography

Shi

Liu

et al. 2022

Preprint

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BackgroundThe purpose of this study was to illustrate and quantify the maxillofacial bone abnormalities detected on panoramic radiographs from a group of Chinese patients with cleidocranial dysplasia (CCD) and to provide a series of diagnostic references for dentists to indicate the presence of disease and help in making an early and accurate diagnosis.Materials and methodsThe dental panoramic radiographs of thirty CCD patients aged 11 to 45 years (18 males and 12 females) were examined retrospectively. The dentition states, including supernumerary teeth and impacted teeth, were recorded. Twelve quantified measurements were adopted to determine the abnormalities of maxillofacial bones, including the degree of the zygomatic arch downward bend, bicondylar breadth, ramal height, mandibular height, mandibular aspect ratio, mandibular body height, condylar height, coronoid height, distance between the coronoid process and the condyle, bigonial width, gonial angle and best-fit gonial circle diameter. The Wilcoxon rank-sum test was used to compare the findings of the CCD patients with those of their matched controls (n=300).ResultsSupernumerary teeth were detected in 27 patients (90.0%), and all 30 patients presented impacted teeth. Compared to the matched controls, the CCD patients had a significantly larger degree of zygomatic arch downward bend (ZAD), a larger diameter of the best-fit gonial circle (BGC), and a shorter distance between the coronoid process and the condyle (DCC) in panoramic radiographs (P<0.001). According to the reference interval established from the 5th or 95th percentile of the measurements in the control group, ZAD less than 6.90 mm, DDC greater than 22.37 mm and BGC greater than 52.41 mm were significantly associated with the CCD features identified. Other panoramic measurements were not significantly different between the two groups.ConclusionsIn this study, we identified some featured radiographic parameters of maxillofacial bones in CCD patients. These features can be recognized in commonly used dental radiographs and therefore may provide valuable information for the early diagnosis and treatment of CCD.

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“…However, it seems clear that orthodontic treatment, including the extraction of supernumerary teeth, is essential for the improvement of occlusion and facial morphology. 2 5 For the proper treatment timing, an early diagnosis of CCD patients using panoramic radiography is crucial.…”

Section: Discussionmentioning

confidence: 99%

“…Few articles have analyzed the imaging features of CCD systemically using panoramic radiography. Since the early diagnosis of CCD is essential for initiating appropriate treatment, 5 dentists should be aware of the characteristic features of CCD. In addition, panoramic radiography is the most commonly used type of radiography in dentistry; therefore, it is necessary to determine the characteristic imaging features of CCD seen on panoramic radiographs.…”

Section: Introductionmentioning

confidence: 99%

Radiographic features of cleidocranial dysplasia on panoramic radiographs

et al. 2021

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Purpose This study aimed to investigate the panoramic imaging features of cleidocranial dysplasia (CCD) with a relatively large sample. Materials and Methods The panoramic radiographs of 40 CCD patients who visited Seoul National University Dental Hospital between 2004 and 2018 were analyzed. Imaging features were recorded based on the consensus of 2 radiologists according to the following criteria: the number of supernumerary teeth and impacted teeth; the shape of the ascending ramus, condyle, coronoid process, sigmoid notch, antegonial notch, and hard palate; the mandibular midline suture; and the gonial angle. Results The mean number of supernumerary teeth and impacted teeth were 6.1 and 8.3, respectively, and the supernumerary teeth and impacted teeth were concentrated in the anterior and premolar regions. Ramus parallelism was dominant (32 patients, 80.0%) and 5 patients (12.5%) showed a mandibular midline suture. The majority of mandibular condyles showed a rounded shape (61.2%), and most coronoid processes were triangular (43.8%) or round (37.5%). The mean gonial angle measured on panoramic radiographs was 122.6°. Conclusion Panoramic radiographs were valuable for identifying the features of CCD and confirming the diagnosis. The presence of numerous supernumerary teeth and impacted teeth, especially in the anterior and premolar regions, and the characteristic shapes of the ramus, condyle, and coronoid process on panoramic radiographs may help to diagnose CCD.

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Case series of cleidocranial dysplasia: Radiographic follow-up study of delayed eruption of impacted permanent teeth

Cited by 6 publications

References 15 publications

Detection and diagnosis of cleidocranial dysplasia by panoramic radiography: a retrospective study

Detection and diagnosis of cleidocranial dysplasia by panoramic radiography: a retrospective study

Detection and diagnosis of cleidocranial dysplasia by panoramic radiography

Radiographic features of cleidocranial dysplasia on panoramic radiographs

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